Expanded metal.



Patented sept. 14,1909.

" ATS HERBERT E. MARKS, 0F POUGHKEEPSIE, NEW YORK.

EXPANDED METAL.

Specification of Letters Patent, `Patented Sept. 14, 1909. Application andy April 41, serial Np. 487,311.

To all wlwm it mag/concern:

Be it known that I, HERBERT E. MARKS., a citizen Iof the United States, residing at Poughkeepsie, in :the county of Dutchess, State of New York, have invented a certain new and useful Improvement inEXpanded Metal, of which the following' is a specifica-- tion, referencebeing had therein to the ac companying drawings. i In carrying the invention into effect I produce sheet metal having at least Vone section thereof in the form ,of expanded meshes, and at least one non-expanded section integral with the first and made with shortenings equalizing its length with that of :the

i expanded section, which is contracted in length by .the expansionv of -its meshes transversely. In the preferred form of embodiment of the invention, the shortenings in/the non-expanded section are constituted by transverse corrugations or bends in they metal which take up a portion of the length.

The said non-expanded section may be lo cated at the margin of the sheet metal, to constitute a border or selvage therefor, or may be located intermediately. By forming the sheetl metal into a series of alternating sections, respectively expanded and non-expanded', with the non-ex andedsections bent into trough-shaped r1 s, in addi tion to having the s ortenings, as aforesaid, the ribs will-.act as trusses, to give stiness,

` whicliIis useful in the case of metallic lathving, for instance,and important in that `it enables the weight of metall necessary to be employed to be materially` reduced with corresponding lessening in cost. 1

A portion of sheet Ymetal embodying the features of the invention is shown inthe drawings, in which latten# Figure l is ak face view thereof. Fig. 2 is an edge view thereof. Fig. 3 is an isometric view of a portion of a non-expanded section, showing the trough-shaped rib-like form thereof, and the corrugations.

In the drawings,-a plurality of sections of each character is shown. The expanded sections are designated l, l. flhe non-expanded sections are designated 2, 2. lThe fonmer sections are represented as expanded int'efepen meshes, alternating in the successive' rows, the expansion being e'ected in bars'thereby produced out of the plane of the sheet metal, ,all substantially as heretofore. As the expanded metal is shorter in the .direction of .the length of the slits and meshes than the metal prior to being expanded, it'has not been found practicable heretofore to manufacture commercially metal in which a section expandedl into meshes. -Such as those herein shown is succeeded immediately by a non-expanded section remaining of the full original length. In conformity with the` rst portion .of the present invention, the diiiiculty just men* tioned is Iovercomeby making shortenings in the non-expanded. sections whereby non-expanded sections 2, 2, are shortened or contracted in lengthlin the same proportion as the expanded sections 1, l, are shortcned by the expanding opera-tion. To this end, in the illustrated embodiment Of the invention the corrugations 3, 3, etc., are made the .said non-expanded sections, transversely with respect to the length of the latter. These transverse -corrugations ofthe ,non-expanded sections take up the excess of length of such sections. The numv l not, the transverse corrugations preferably are extended bbliquely as shown, although the invention `is not in all cases restricted to lobhquely-disposed corrugatio'ns.

When metal embodying the invention in its more complete form is used as metallic latli'ihg, the ribs may serve as furring strips, and 'the attaching nails or staples may be driven through holes in the bottoms of the said ribs.

preceding line, and pressingthe 'strips or from the wall or other support or supports,

i vin which casewhen the m'etal is caused to occupy an upright or substantially upright position with the ribs extending horizontally each rib will serve to support the body of 5 plaster or thel like which is applied above tle rvsame, between it and the next rib above.

Foruse thus applied, the ribs may be formed to project lessin proportionfrom the general plane of the metal thanI in the drawings.

When the trough-shaped ribs are formed along the margins of themetal, a marginal rib of one sheet may be fitted over the adjacent marginal rib of another sheet so as to doubly stiil'en and reinforce the metal at such place, in. addition toilocking the margins together in proper relative position.

What I claim as my invention 1s:- '1. The improved ex anded metal having one or more sections t ereof in the-form of expanded meshes, and one or more nonexA `panded sections integral with the first and made with shortenings by which its length is equalized with that of the expanded section.

2. The ixinproved expanded metal havingV one or more sections thereof in the form of expanded meshes, andone or more non-expanded sections integral with the expanded le to the length thereof whereby suchlengt is equalsection and corrugated at an a with that of the expanded section. .3. The improvedsheet metal formed into a series of sections, alternately expanded and vnon-expanded, the non-expanded sections ribbed and having shortenings `by vwhich their length is equalized with that of the expanded sections.

4. The i 'proved a series of sections, alternately expanded and non-expanded, the non-ex anded sections ribbed and being corrugate 'transversely of the length thereof whereby such length is reduced.

sheet metal formed into L 5. The improved expanded metal having A one or more sections thereof in the form of Y expanded meshes, and one or more non-exanded sections integral with the rst and ormed with transverse corrugations extendsuch sections whereby such length is shortened.

ing obliquely with respect` to the` length of 6. The improvedexpanded metal. formed f HERBERT E. MARKS.

I Witnesses: i 'i CHAs. F. RANDML, EDITH J. ANDERSQN.

guy signature 

